In-depth reviews

Lexus IS saloon - MPG, running costs & CO2 (2013-2020)

The Lexus IS hybrid promises some very impressive economy numbers, but they can be difficult to match in the real world

Carbuyer Rating

3.6 out of 5

Owners Rating

4.5 out of 5

Read owner reviews
MPG, running costs & CO2 Rating

3.5 out of 5

If good fuel economy and low running costs are a priority, the Lexus IS 300h hybrid can stack up well against petrol and diesel rivals, making it a good choice for company-car buyers.

Lexus IS MPG and CO2

Lexus says the IS 300h's combination of a four-cylinder petrol engine and an electric motor return up to 67.2mpg, but in our experience this is hard to achieve in real-world driving – more so than some diesel rivals, such as the BMW 320d. However, CO2 emissions of 97g/km mean company-car drivers’ Benefit-in-Kind (BiK) tax liability will be low.

Depending on which trim levels and wheels you go for, CO2 emissions range from 97 to 99g/km, but the BiK tax bracket remains unchanged. Under the current road tax system, the hybrid IS attracts a slightly lower annual bill than petrol or diesel models. Top-spec cars costing over £40,000 will incur an additional road tax surcharge in years two to six, making it rather costly during that period.

Insurance group

Executive cars tend to be fairly expensive to insure, and the IS 300h’s group 28-30 rankings (out of 50) mean premiums will be pretty pricey. In fairness though, the BMW 3 Series gets similar ratings unless you choose the entry-level BMW 3 Series.

Warranty

Although Lexus is the luxury division of mainstream manufacturer Toyota, it doesn’t offer its parent company’s five-year/100,000-mile warranty. Instead, the IS will be covered for three years or 60,000 miles - although the hybrid components and battery of the IS 300h are covered for five-years or 100,000 miles. You also get a three-year paintwork and surface rust warranty and a 12-year anti-corrosion warranty for the bodywork.

Servicing

The Lexus IS needs to visit the dealer once a year or every 15,000 miles – whichever comes first. Services alternate between intermediate and full, with intermediate costing around £250 and full costing around £450. At 60,000 miles a ‘Full+60’ check is required, costing £650 and involving the replacement of some wear-and-tear items,’ while if you still have your IS at 100,000-mile mark, it will need a ‘Full+100’ service, which costs £600.  

Recommended

Euro NCAP: how safe is my car?
Renualt ZOE Euro NCAP
Renault ZOE hatchback
1 Jun 2022

Euro NCAP: how safe is my car?

Most Popular

Engine management light: top 5 causes of amber engine warning light
Engine management light: top 5 causes of amber engine warning light
Car technology
22 Jun 2022

Engine management light: top 5 causes of amber engine warning light

Top 10 cheapest electric cars 2022
2021 Citroen Ami
Best cars
16 Jun 2022

Top 10 cheapest electric cars 2022

Best new car deals 2022: this week’s top car offers
Fiat 500 e front corner
Deals
24 Jun 2022

Best new car deals 2022: this week’s top car offers

Tips & advice

View All
Car dashboard warning lights: the complete guide
Car dashboard symbols and meanings
Tips and advice
23 Mar 2022

Car dashboard warning lights: the complete guide

Electric car charging stations: a complete guide
Electric car charging station
Tips and advice
5 Nov 2021

Electric car charging stations: a complete guide

PCP vs HP – which type of car finance is right for you?
PCP vs HP
Car buying
17 May 2022

PCP vs HP – which type of car finance is right for you?

Average speed cameras: how do they work?
Average speed cameras: how do they work?
Tips and advice
20 Jun 2022

Average speed cameras: how do they work?

Best cars

View All
Top 10 best car interiors 2022
Peugeot 208 hatchback
Best cars
25 Jun 2021

Top 10 best car interiors 2022

Top 10 best electric cars 2022
Ioniq 5
Best cars
25 Apr 2022

Top 10 best electric cars 2022

Top 10 best cheap-to-run cars 2022
Nissan Leaf front
Best cars
3 May 2022

Top 10 best cheap-to-run cars 2022

The UK's top 10 fastest hot hatchbacks 2022
Audi RS 3 driving - front view
Hot hatches
24 Jun 2022

The UK's top 10 fastest hot hatchbacks 2022